Milling attachment for lathes.



J. J. FUCHS, JR. MILLING ATTACHMENT FOR LATHES.

AYPLIOAITION FILED JULY 23, 1912.

aten ted Feb.11,1913.

2 SHEETSSH:BBT 1.

J. J. FUCHS, JR.

MILLING ATTAGHMENT FOR LATHE-S APPLICATION FILED JULY 23, 1912.

Patented Feb. 1 1, 1913.

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JOHN J. FUCHS, J'R, 0F BENSON, NEBRASKA.

MILLING ATTACHMENT FOR LATHES.

Specification of ietters Patent.

Patented Feb. 1t, 1913.

Application filed July 23, 1912. Serial No. 711,163.

To all whom it may concern.

Be it known that I, JOHN J. FUcHs, Jr., a citizen of the United States, and a resident of Benson, in the county of Douglasv machines.

-It is the object of my invention to pro-- vide an attachment which: may be used onthe ordinary forms ofmetal-working or engine lathes, toenable the. common milling operations, such as the keyseating of shafts, to be performed thereon.

Further objects of .my invention are to provide means for holding the work so that the same may be moved in two directions in a horizontal plane, and means for moving I the milling cutter toward and away from the work.

Constructions embodying my invention are illustrated in the accompanying drawings, in which'- Figure 1 isa partial front elevation of a lathe having my attachment applied there to, parts of the attached devices belng shown in vertical section, Fig. 2 is an end elevation of the milling device connected with the headstock and headstock spindle,

and Fig. 3 is a plan view of the chuck or work-holder connected with the carriage. of

the lathe.

The parts of thelathe represented in the drawings are all of the ordinary construc-.

tion and arrangement and comprise'the following: The lathe-bed' l; feed-rack 2; leads'crew 3; the headstock having the bearin 7 standards 4 and 5, drive-pulleys 6, bac

gears 7 and spindle 8; and the carriage having the apron 9, saddle 10,-cr'oss'-feed rail' 11, cross-feed screw 1,2, the handle 13 for 5* turning'the cross-feed screw, and the handle longitudinally of the lathe-bed. c 7 For holding the work to be milled I pro vide a vise'or chuck having a member 15 with a dove-tail channel in the lower side 14 for traversing or moving thereof adapted to fit slidably on the-crossieed rail 11, and a jaw- 16 integral there- I .with and extending upwardly to form one side oflthe work holder. The mem'ber' 15 isconnected by means .ofa screw 17-wi ththe the screws exte'nd perpendicularly to the the carriage screwing the gear off and onto the spindle 8.

parallel to the axis of the spindle 8 and nut on the cross-feed screw 12 and lying in the central slot in the cross-feed rail. By turning the handle 13 the said nut and the member 15 are. moved transversely to the lathe-bed in the same manner as the usual cross-feed slide upon which the tool-post is carried when the lathe is used for ordinary work. The movable jaw-member 18 rests upon the flat uppersurface of'the member 15 and is held thereon by means of a screw 19 which passes through a slot therein as shown in Fig. 3.. The jaw member 18 is moved toward the 'fixed jaw by means of the screws 20 and '2l which pass through blocks 22 and 23, said blocks being pivot-. ally connected with the member 15 so as to be swingable on vertical axes. By advancing one of the said screws more than the otherthe jaw-member ldmay beswung about the axis of the screw 19 so that an irregular or wedge-shaped piece of work may be held between the jaws 16 and 18.

-VVhen the jaw-member 18 is swung the blocks 22 and 23 turn .to positions such that 801 face of the jaw-member en aged bythem.

It will be obvious that y the described devices the work held by the chuck may be moved longitudinally of the lathe-bedby traversing the carriage in the usual way, and may be moved transversely to the lathebed by turning the handle 13 and cross-feed screw 12 as is done in feeding the tool in tothe work in ordinary turning operations on-a lathe. 96' Upon the end of the spindle 8, which is regularly, threaded -to receive a chuck or face-plate, there is screwed a gear 24 hav: ing an elongated hollow hub25. Swingably mounted upon the hub 25 is a casing 26-. which-is normally held against movement longitudinally of the hub by means of a plate 27 which is'secured uponthe end of" the hub by means of small screws, as shown. In the plate 27 is a rectangular slot in which a bar may be. inserted forthe purpose of The milling-spindle 28 is revolubly mounted in the =casing 26 so that its axis is gear 24. On the inner end of the' spindle] 28 is a gear 29 which meshes with the gear '24. The outer end portion of the spindle has a shoulder formed thereon, is threaded=, and has a nut 30 on-the threaded -portion, 118

so that asuitable milling-cutter 31 and spacing washers or sleeves 32 maybe clamped thereon between the shoulder and the nut, as shown in Fig. 1. On the upper part of the casing 26 is formed a worm-gear segment 33.

A bracket 8st is secured to the standard 4 which carries the end-bearing for the spindle 8, said. bracketpreferably being secured to the standard by the same screws that are employed'to holdthe bearing-cap. In the bracket is revolubly mounted a transversely extending shaft, on the central part of which is formed a worm 35 which meshes with the worm-gear segment On the front end of the shaft is a handle-.36 which maybe turned to revolve the wormand rotate the casing 26 about the axis of the spindle 8. A-plate 37 having an arcuate .slot therein is secured to the casing 26 and extends upwardly therefrom, adjoining the outer face of thebracket 34. A screw 38 passes through said slot into the bracket and may be employed to clamp the plate against the bracket and thus hold the casing 26 in a fixed relation to the headstock. It will be obvious that when the screw 38 is loosened and the casing 26 swung about the axis of the spindle 8, the milling-spindle 28 and cutter 31 will be raised and lowered relatively to the work held by the chuck o work-holder on the lathe carriage.

At the beginning of the milling operation the cutter may be fed down into the work by turning the handle 36, and after the cutfor has reached the proper depth the screw 38 may be tightened to hold the cutter se curely at the proper elevation. The. crossfeed screw may then be turned by means of the handle 13 so as to move the chuck and the work held thereby transversely to the lathe-bed, onlyfor the purpose of bringing the work and the milling-cutter into proper alinement, but said movement of the carriage might be used for feeding the Work to the cutter in the event that there was employed an end-mill or one adapted to cut at the endor side-face thereof instead of at the peripheral face only.

I Now, having described my invention, What I claim and desire to secure by Letters Patent is: i

1.. In a lathe, the combination with a carriage,a work-holder carried thereby, a headstock, and a spindle revoluble therein, of a revoluble milling spindle, driving means for connecting the same with the headstock spindle, means for adjusting the milling spindle concentrically about the axis of the headstock spindle, and means for retaining the milling spindle in adjusted relation to the head-stock.

, 2.- The combination with a work-holder adapted-tobe mounted on a lathe carriage,

and a headstock having a revoluble spindle,

ofa casing pivotally mounted concentrically with the headstock spindle, a milling spindle revoluble in' said casing and actuated by the headstock spindle, means for moving the casing about the axis of the headstock spindle, and means for retaining the casing in adjusted relation to the headstock.

The combination with a lathe headstock and spindle, of a casing mounted to swing concentrically about the axis of the lathe spindle, a milling spindle revolublc in said casing, driving means connecting said spindle andvthe lathe spindle, and means for adjusting said casing about the axis of the.

lathe spindle. 4

4. The combination with a lathe headstock and-spindle, of a casing mounted to swing about the axis of the lathe spindle, a milling spindle revoluble in' said casing, gearing'operatively connecting said spindles, a worm-gear segment on the casing, a shaft revolubly mountedon the headstock, and a worm on said shaft engaging the worm-gear segment for moving the casing transversely to the axis of the lathe spindle. 5. In a milling attachment for lathes, the combination with a headstock having a spindle revolubly mounted therein, and a work-holder movable in a horizontal plane longitudinally of and transversely to the headstock spindle, of a v milling spindle mounted adjacent to the headstock spindle, driving means connecting said spindles, and meansfor adjusting the milling spindle verti cally to move the same towardand away from the work-holder.

6. a lathe, the combination with a longitudinally movable carriage having a cross-feed screw, and a headstock having a revolu-ble spindle, of a work-holder mounted on the carriage and connected with the cross-feed screw so as to be movable transversely thereby, a gear removably connected with the headstock spindle, a casing mount- -ed' on said gear, a milling spindle revolubly mounted in the casing and actuatable by said gear, and means for moving the casing about the axis of the gear to vary the vertical relation'of the milling spindle tothe work-holder.

In testimony whereof I have hereunto subscribed my name in the presence of two J OHN J. FUCHS, JR. \Vitnesses A. R. Mrronnnn, D. O. BARNELL.

witnesses. 

